And yet if you look on Google Trends you can see that Open Office has 15x the number of searches LibreOffice has. Trademarks are incredibly sticky in people's minds and forks are hard to pull off. I have experience here as I run a multi-threaded fork of Redis and people constantly ask if we have the same features.
as anecdotal evidence everyone I saw use "openoffice" in the last 6+ years was actually using libreoffice and calling it openoffice (it was in italy, so language can be a factor. openoffice has a more natural sound than libreoffice)
Part of this may have to do that OpenOffice is more enterprise-oriented, so maybe more likely to be recommended by IT people with exposure to it, and more likely to be used in an organizational context. I actually recently searched for "openoffice" when I meant "libreoffice" (which I switched to years ago). So definitely inertia in various manifestations. I think this is why some forked projects make little effort to maintain "mental continuity" (visual, naming) with their parent; it might be just as well to appear as something entirely distinct from the beginning.
